Mike Tinmouth, co-founder and COO of Acua Ocean, argues that the open ocean is becoming the next operational frontier. His company, founded in 2021, focuses on autonomous surface vessels built for full ocean conditions, not just nearshore or harbor environments.
Acua Ocean did not begin as a purely military venture. From the outset, it positioned itself as dual use. Early designs centered on profecting undersea data cables, pipelines, and offshore infrastructure. At the time, those concerns were treated as maintenance issues rather than security priorities. Events in Ukraine and the Nord Stream incident shifted that perception.
Their drones don’t look like typical boats.
“We basically thought if it’s a robot, why does it need to look like every other boat out there?” said Tinmouth. “So we moved away from a traditional monohull and we went for what’s called a SWATH vessel, a small water plane area twin hull. It’s intrinsically an incredibly stable design, looks a little bit like a cat. So our 14 meter drone ship performs to the same sort of stability calculations as a 45 meter plus vessel. So we said rather than building a boat like all the others, let’s focus on what it’s really, really good at and make it stable as possible.”
Instead of operating in calm conditions, the vessel is designed for rougher seas. That matters in both commercial and defense contexts. Offshore operations in Western Europe are often constrained by weather windows. In conflict scenarios, operations are not paused for rough conditions. Tinmouth’s view is that systems need to function when seas reach four meters, not just when conditions are ideal.
“So if you’re operating in the North Sea and you’re only limited to 120 days of operation a year, that’s really challenging from a cost perspective,” he said. “Whereas the robotic system doesn’t have to comply with labor laws. Human safety is not a factor.”
“That’s also critical from a defense perspective because when conflict comes, it’s not going to be limited by the weather. If China is tying up a potential future conflict with Taiwan, they’re going to wait for the most adverse weather conditions.”
Aqua Ocean launched its prototype vessel, Pioneer, in 2024. The craft has accumulated more than 7,500 hours on the water, including extended open ocean trials. It became the first unmanned surface vessel to receive UK Maritime and Coastguard Agency approval under the Workboat Code 3 framework, enabling offshore commercial operations.
The company is now building its second-generation platform, with plans to scale production beginning in 2027. Tinmouth describes a shift away from traditional shipbuilding toward production methods closer to automotive or aerospace manufacturing. Without crew accommodations, vessels can be designed around systems architecture and mission requirements rather than human comfort. Their mission is to protect the sea in the same way flying drones protect the land.
“We know here in the UK, 95 % of financial transactions still are processed by undersea data cables. That is our main source of connectivity. So if you want to cause real disruption to the operations of Western Europe and most of our allied nations, you take out infrastructure at sea. And we see, whether it’s the UK, whether it’s Western Europe, whether it’s Taiwan, a lot of the potential areas of future conflict are going to be at sea,” said Tinmouth.
